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Dissertations / Theses on the topic 'Suspension kinematics'
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Harvey, William Thomas S. B. Massachusetts Institute of Technology. "The optimization of a Formula SAE vehicle's suspension kinematics." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119955.
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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 33).<br>The suspension geometry is the foundation of a performance vehicle's design because it dictates the overall packaging constraints and the connection between the chassis and the tires. This thesis details the design process used to produce the suspension geometry for MIT Motorsports' 2018 Formula SAE car and the justification for each design decision made. A thorough iteration process was used to prevent compromises that could significantly detract from specific component performance in order to meet suspension kinematic requirements. Using this process, the kinematic performance of the suspension was maximized by minimizing the roll center's movement and designing the tire camber change characteristics to achieve 0° of outer-wheel camber while at the car's maximum lateral acceleration.<br>by William Thomas Harvey.<br>S.B.
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Fišer, Radoslav. "Měření kinematických bodů zavěšení vozidel s využitím měřícího zařízení Tritop." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228283.
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Bc. Radoslav Fišer Suspension kinematics points measurement with use of measurement device Tritop MT, IAE, 2008, sites 58, pictures 45 We compare methods of obtaining input data for sotwares simulating kinematic and dynamic characretistics of vehicle suspension. Digitizing system working with three dimensional coordinates Tritop and Atos is used for measurement. With repeated measuring we investigate accuracy, time hefftines and suitability of methods for car suspension mesurement. Special targest were developed to use with Tritop device measurement.
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Souček, Ondřej. "Optické scannery - měření kinematických bodů zavěšení." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229118.
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The master´s thesis deals with creating a usable methodology for measuring the position of kinematic points McPherson suspension using optical scanners available on ÚADI. The answer lies in comparing the measurement results obtained using the scanners ATOS and TRITOP with regard to the different measurement methods. Using analytic geometry and the software ADAMS are fixed characteristics of the suspension, they are compared with values measured on the geometry. Finally, it evaluated the accuracy of measurement methods.
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Hyvärinen, J. P. (Jukka-Pekka). "The improvement of full vehicle semi-active suspension through kinematical model." Doctoral thesis, University of Oulu, 2004. http://urn.fi/urn:isbn:9514276124.
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Abstract
Over recent years the progress in actuator and microelectronics technology has made intelligent suspension systems feasible. These systems are designed to reduce the drivers' exposure to harmful vibration, as well as to improve the handling properties of the vehicle. Due to widespread use of vehicles as an example of a true MIMO-system, a myriad of different control schemes and algorithms can be found in the literature for these systems. Linearized models are commonly used when the control algorithms are derived.
This thesis describes the development of a new analytical full vehicle model, which takes the essential kinematics of the suspension system into account, as well as a new approach to controlling the full vehicle vibration problem. The method of calculating the desired damping forces for each of the semi-active actuators is based on the skyhook theory and this new model is introduced.
The performance of the control schemes is evaluated with simulations in a virtual environment. For the excitation to the vehicle, standardized ISO-tracks, washboard tracks and single bump tracks were used. The performance between the two different semi-active control systems and the passive system are compared in terms of damping the vibration, variation of the dynamic tire load and demand for rattlespace.
The damping of vibration evaluates both the ability to suppress the vibration on heave, pitch and roll degrees of freedom and ability to reduce the drivers' exposure to harmful whole body vibration. The frequency distribution of the vibration was also reviewed. Variation of dynamic tire contact force is evaluated as an RMS-value and the demand for rattlespace is evaluated as a percentage value of the used rattlespace compared to the maximum free stroke provided by the suspension hardware.
As a result from this work, the theory and simulation results are presented. Also a new vehicle model, which takes the essential non-linearity caused by suspension kinematics into account, is presented including all the mathematics needed. The comparison between the passive and the semi-active concepts has been performed on the basis of simulation results. These results show that the novel semi-active concept reduces the driver's exposure to vibration induced by terrain undulations better than any earlier proposed version. Also variation of dynamic tire load is reduced with a novel concept, while it suffers a drawback in the demand for the rattlespace.
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Haines, Grant Emerson. "Integration of Undulatory Swimming Kinematics and Ram Suspension Feeding in A Model American Paddlefish." W&M ScholarWorks, 2017. https://scholarworks.wm.edu/etd/1499450055.
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Ram suspension-feeding fishes are a taxonomically diverse group that is both economically and ecologically important. However, many questions remain pertaining to how they feed, including the types of prey they are capable of capturing, the metabolic costs associated with feeding, and the process of manipulating and transporting food around the oral cavity. Recent research has shown that the American paddlefish (Polyodon spathula) employs vortical cross-step filtration, which includes crossflow filtration processes that are organized into a spatial structure across the gill rakers by the formation of vortices behind the branchial arches. Potential temporal organization of filtration mechanisms in ram suspension-feeding fish has not been studied previously. Because ram suspension feeders swim forward with their mouths open to capture prey, we investigated the effect of the locomotory kinematics associated with undulatory swimming on intra-oral flow patterns and food particle transport. We constructed a mechanized model to simulate the swimming of suspension-feeding paddlefish, and recorded fluctuations of flow speed and pressure within the model. We also showed that swimming kinematics aided the transport of food particles from the gill rakers to the posterior margins of the gill slots. These findings suggest strong integration between locomotor and feeding systems in ram suspension-feeding fishes.
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Glass, Jeffrey Lewis. "Experimental Evaluation of a Trailing-Arm Suspension for Heavy Trucks." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/32790.
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This study includes an experimental evaluation of a prototype trailing-arm suspension for heavy trucks. The primary goal of this new suspension is to match or improve the kinematics and dynamic performance of an existing â Z-barâ suspension. Significant reductions in cost, weight, and number of parts are the main reasons for this redesign.
A permanent facility is constructed to support the testing of different heavy truck suspensions. For actuation of the vehicle suspension, hydraulic actuators are used in the kinematics tests in a quasi-dynamic manner. For the dynamic tests, the vehicle is excited using two hydrodynamic actuators. A collection of forces, displacements, velocities, and accelerations are measured during the tests using transducers that were installed on the suspension and test vehicle. The test measurements are analyzed in both time and frequency domains and then the results of the two suspensions were compared to establish the dynamic merits of the prototype suspension.
The kinematics tests include vertical stiffness, roll stiffness, and roll steer measurements for each suspension. The results from the kinematics tests show that the trailing-arm suspension exhibits kinematics traits that are quite similar to the â Z-barâ suspension, within the context of the tests conducted in the study.
The dynamic testing consists of three input signals commonly used for such tests, namely: a chirp signal input, a step signal input, and a range of pure tone inputs. The test results show that the resonant frequencies of the two primary suspensions differ by an amount that is most likely too small to affect ride dynamics. The two suspensions, however, exhibit significantly different damping characteristics. The new suspension has much less frictional damping than the existing suspension. This is expected to provide better ride characteristics, assuming that the primary dampers (shock absorbers) are properly tuned for the vehicle that the new suspension was designed for.<br>Master of Science
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Smith, Jennifer Claire. "Particle Retention in Suspension-Feeding Fish: Kinematics, Oral Flow Speed, and Particle Retention during Tilapia Suspension Feeding with Gill Rakers Intact vs Removed." W&M ScholarWorks, 2006. https://scholarworks.wm.edu/etd/1539626848.
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Martinec, Jiří. "Měření a analýza kinematických vlastností zavěšení formule Student Dragon 1." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230501.
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The Diploma Thesis is focused on influence of manufacturing inaccuracy on suspension kinematics of Formula Student car Dragon 1. The real kinematics points were measured with 3D optical scanners and then the real vehicle kinematics was analysed. The gained data were compared with the ideal suspension points. For these purposes was used multibody system software MSC ADAMS.
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Zubíček, David. "Návrh podvozkové skupiny vozu Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254225.
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Diploma thesis deals with comparison of different types of tyres destined for Formula Student vehicle. Comparison is from view of chosen characteristics and from view of simulations for one lap. Thesis deals with kinematics design of suspension according to chosen tyre and according to improvement of car ability of monopost Dragon 6
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Štipák, Patrik. "Vývoj zavěšení kol vozu Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231940.
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Tato diplomová práce je věnována vývoji a analýze zavěšení Formule Student. V úvodu je představena mezinárodní soutěž Formula Student, její disciplíny a historie týmu TU Brno Racing a UH Racing. V teoretické části je detailní popis charakteristik pneumatiky, kinematický návrh zavěšení a aerodynamiky s ohledem na závodní vozy. V části věnované konstrukčnímu návrh je popis vývoje ramen zavěšení, vahadel a zadního stabilizátoru. Návrh kinematických charakteristik vozu Dragon 5 je detailně popsán a porovnán s předešlou variantou. Mimo vývoje kinematiky Dragon 5 je popsán vývoj vozu UH 18. Závěrečná kapitola detailně analyzuje zaznamenaná data z testování vozu Dragon 4.
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Šťáva, Martin. "Návrh závodního vozidla kategorie T1." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401488.
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This diploma thesis deal with conceptual design of racing car of T1 category. Car consist of tubular frame, front and rear double wishbone suspension, braking system and conceptual design of the fairing. These are the basic of this thesis. For the completeness of the design, the location of the crew and the placement of the components inside the frame are also proposed. Adams Car 2016, Autodesk Inventor 2016, Ansys Workbench 18.1 were used for designing, testing, simulation and calculations. Designed T1 category race car meets International Automobile Federation (FIA) technical standards and safety regulatons.
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Chaura, Václav. "Přestavba zavěšení předních kol automobilu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400428.
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This diploma thesis is focused on the design of the conversion of the car front suspension for racing purpose. Existing suspension solution is described by analyse static and kinematic quantities. Furthermore, a change of suspension is proposed to improve the driving characteristics of the vehicle, where the kinematic, dynamic and strength analysis of the newly designed suspension is performed. The conclusion summarizes the comparison of the original and the new suspension design.
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Veselka, Michal. "Měření a analýza kinematiky zadního víceprvkového zavěšení." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230580.
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This diploma thesis deals with the measurement of kinematic points of rear multilink suspension using 3D optical scanners TRITOP and ATOS and developing a measurement methodology of similar types of suspension with these scanners. Subsequently, kinematic features of this suspension are analyzed using the multibody system MSC.ADAMS / Car.
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Urban, Marek. "Návrh zavěšení kol Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417557.
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Tato práce se se zabývá návrhem kinematiky zavěšení kol obou náprav. Na základě analýz jízdních dat, multi-body simulací v softwaru Adams Car, simulací v Matlabu a analytických kalkulací v Mathcadu, je navržena řada změn s cílem zlepšit jízdní vlastnosti vozu Formule student, tyto změny jsou následně implementovány do CAD modelu vozu. Jednotlivé změny kinematiky náprav jsou provedeny na základě analýzy konkrétního problému, který se snaží řešit. Jednou z problematik je zástavbová náročnost systému odpružení a zavěšení zadních kol, zde je cílem snížit hmotnost, výšku těžiště a moment setrvačnosti. Další problematikou je geometrie předního kola, kde je cílem zlepšit využití pneumatik a snížit síly v řízení. Dále se práce zabývá simulacemi elastokinematiky zadní nápravy, součástí je také návrh měřícího zařízení. V poslední části je zkoumán vliv provedených změn i elastokinematiky na jízdní dynamiku vozu v ustálených stavech za pomocí MM metody simulované s modelem celého vozu v Adams Car a zpracované v Matlabu.
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Dvořák, Martin. "Měření geometrie a kinematiky zavěšení s využitím optických scannerů Tritop a Atos." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230350.
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The diploma thesis is focused to possibility utilizing of optical scanners TRITOP and ATOS for set up geometry of wheels. In background research are described the most important parameters of wheel suspension and devices for measuring these parameters. Practical part is concerned with progression of measurement, results and with determination coordinates of kinematic points. These points are made 3D model of forward and backward suspension wheels. This model helps to make kinematic characteristics and its progression due to attitude of wheel. In last part is described possibility to utilizing of optical scanner ATOS to common measurement of geometry wheels.
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Moravec, Jan. "Přední nezávislá náprava pro autobus." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227878.
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In those diploma work was solved problems of independent trapezoidal axletree for low-floor bus - NB12 CITY firm SOR Libchavy s.r.o . Work was divided into two main features: solving wheel-suspension kinematics and strenght calculation sorted parts of wheel suspension by the help of finite element method. There was effected fatigue calculation sorted parts of wheel suspension according to „Resetova metoda“ of predicting fatigue damage flowing from so – called cutaway methodics of fatigue tests at the close of this work.
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Wagner, Timothy Paul. "The Mechanical Design of a Suspension Parameter Identification and Evaluation Rig (SPIdER) for Wheeled Military Vehicles." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322502477.
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Nenad, Poznanović. "Prilog kinematičkoj sintezi mehanizama u sistemima oslanjanja motornih vozila." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101537&source=NDLTD&language=en.
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U radu je razmatran problem projektovanja polužnih mehanizama koji se primenjuju u sistemima elastičnog oslanjanja drumskih vozila.Polužni mehanizmi za vođenje točka imaju zadatak da ostvare pokretnu vezu točka sa nosećim strukturama vozila koja omogućava približno vertikalno relativno kretanje točka u odnosu na telo vozila i obezbeđuje prijem aktivnih i reaktivnih sila i momenata nastalih u interakciji točka sa podlogom.Definisana je jednostavna, univerzalna metoda za optimalnu sintezu mehanizama u sistemima oslanjanja vozila, koja ne zahteva pripreme i prilagođavanje različitim specifičnim uslovima i zahtevima sinteze mehanizama u okvirima ove tematike. Osnovne karakteristike predloženog postupka su: tačnost i praktična primenljivost usvojenog metodološkog prilaza; jednostavnost i univerzalnost celokupnog postupka sinteze, osigurana usvajanjem algoritma diferencijalne evolucije kao optimizacione metode; robusnost metoda i odsustvo potrebe za pripremom i prilagođavanjem različitim postavkama problema sinteze; implementacijom postupka u okruženju opšteg matematičkog programa Mathcad omogućeno je da svi elementi proračuna (ulazni podaci, jednačine, komentari, skice, dijagramski prikazi i numerički rezultati) budu objedinjeni na jednom mestu.Primena razvijenog postupka sinteze demonstrirana je na karakterističnim problemima optimalne sinteze mehanizama za oslanjanje vozila. Problemi su postavljeni tako da je zadato kretanje nosača točka - generisano je mehanizmom poznate konfiguracije. U takvoj postavci problema, u kojoj se pouzdano zna da se zadato kretanje nosača točka može ostvariti, izvedeni su numerički eksperimenti sa višestrukim ponavljanjem postupka sinteze uz variranje početnih vrednosti nepoznatih konstrukcionih parametara slučajnim izborom iz širokih intervala. Dobijeni rezultati su pokazali da je u svim slučajevima razvijeni postupak sinteze rezultovao mehanizmom koji ostvaruje zadato kretanje uz odstupanja znatno ispod praga fizičke značajnosti.<br>This paper is focused on the design of lever mechanisms used in systems for elastic vehicle suspension.The lever mechanisms used for wheel guidance are tasked with accomplishing a mobile connection between the wheel and the support structure that allows the wheel a roughly vertical motion relative to the vehicle body and receives the active and reactive forces and torque originating from the interaction between the wheel and the ground.A simple, universal method for the optimal synthesis of mechanisms used in vehicle support systems is defined, one that doesn’t require extensive preparation or adjustments for specific conditions. The basic characteristics of the proposed method are: accuracy and practical applicability of the method; simplicity and universality of the whole synthesis process, insured by adopting the differential evolution algorythm for the optimization method; robustness of the method and the lack of need for preparation and adjustments to the different synthesis peoblems; by implementing the method in the universal mathematical program Mathcad, the calculation elements (input, equations, comments, sketches, diagrams and numerical resuts) are all presented and accessible in one place.The application of the developed method is demonstrated on charachetirstic problems of the optimal synthesis of vehicle support mechanisms. The problems are set up so that the motion of the wheel support is known – it is generated by a mechanism with a known configuration. In this kind of setting, where one is sure the given motion of the wheel support can be accomplished, a series of numerical tests was performed with multiple repetitions of the synthesis method using different initial values of the unknown construction parameters randomly chosen from wide intervals. The results of these experiments have shown that for each set of initial values, the developed method resulted in a mechanism that accomplished the required motion with very slight deviations, too small to be of any practical importance.
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Liu, Guan-Zhi, and 劉冠志. "Effect on Vehicle Kinematics by Optimizing Semi-trailing Arm Suspension Mechanism." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/46410488955611052082.
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碩士<br>國立屏東科技大學<br>車輛工程系所<br>98<br>This article makes use of ADAMS/Car simulation test to discuss the parameter change of every component’s kinematic mechanism from suspension system, and an analytical model of chassis kinematic parameter would be developed simultaneously so as to provide important data for the measurement of technological practice. And then, tuning and optimization of the suspension system would be carried out, which serves as the reference for modifying the design of components; this is very helpful to the design of chassis. First, ADAMS/Car is used to establish semi-tailing arm suspension multi-body model system and ADAMS/Solver is used to find out different motion models, so as to carry out Parallel Wheel Travel and Roll＆Vertical Force analyses for this system. The simulation of ADAMS could be used for predicting the performance, motion range, and impact test of machinery system and all kinds of parameters and curves could be obtained. Next, ADAMS/insight is used to carry out the Sensitivity Analysis for suspension system so as to obtain the optimized alignment parameters, these parameters serve as the basis for adjusting the suspension mechanism layout; the obtained important parameters from the result could be compared and verified with the data that is tested by K&C machine in the future.
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Fathallah, Marwan Ahmad. "On the kinematics and dynamics of systems in a computer aided engineering simulation model (Suspension Pro)." 1995. http://catalog.hathitrust.org/api/volumes/oclc/33098588.html.
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Thesis (M.S.)--University of Wisconsin--Madison, 1995.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 195-199).
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Tsai, Po-Jen, and 蔡博任. "Kinematic Analysis of Independent Suspension systems." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/60318908792468647971.
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碩士<br>國立臺北科技大學<br>車輛工程系碩士班<br>92<br>This study analyzes the motions of independent suspension systems, including Macpherson Struct type, and Double-Wishbone type, usually found in general-purpose passenger cars. The researcher first establishes the 2-D mathematical models of these two suspension systems, and calculates the camber angle and wheel center lateral displacement relative to vehicle height, wheel vertical displacement, vehicle roll, variation of linkage length and joint shift by using closure equation. Then the characteristics of different independent suspension systems are compared and the analysis results are contrasted through ADMS/CAR software. The comparisons show that there is a little difference between the results by closure equations and that by ADMS/CAR software. Therefore, before proceeding to software simulation, the researcher can analyze the motions of independent suspension systems qualitatively by using closure equations.
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Chen, Bo-Hau, and 陳柏豪. "Spatial Kinematic Analysis of Independent Suspension Mechanism." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/qktkr8.
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碩士<br>國立臺北科技大學<br>車輛工程系所<br>100<br>This study analyzes the motions of independent suspension mechanism, including Double-Wishbone type and Macpherson Strut type, usually found in general-purpose passenger cars. This study builds space suspension mechanisms through kinematic analysis of vehicle suspension mechanisms including quarter-car, half-car and full-car. Kinematic analysis of suspension derivative method can be used to find the body-wheel movement relationships and the instant axis. Then the characteristics of different independent suspension systems are compared with the simulation of ADAMS/Car software. Therefore, the design parameters of vehicle suspension can be modified according to results of analysis; in addition, this study can provide a platform for vehicle dynamic analysis.
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Wong, Pius Duc-min. "Methodology for creating human-centered robots : design and system integration of a compliant mobile base." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-05-5433.
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Robots have growing potential to enter the daily lives of people at home, at work, and in cities, for a variety of service, care, and entertainment tasks. However, several challenges currently prevent widespread production and use of such human-centered robots. The goal of this thesis was first to help overcome one of these broad challenges: the lack of basic safety in human-robot physical interactions. Whole-body compliant control algorithms had been previously simulated that could allow safer movement of complex robots, such as humanoids, but no such robots had yet been documented to actually implement these algorithms. Therefore a wheeled humanoid robot "Dreamer" was developed to implement the algorithms and explore additional concepts in human-safe robotics. The lower mobile base part of Dreamer, dubbed "Trikey," is the focus of this work. Trikey was iteratively developed, undergoing cycles of concept generation, design, modeling, fabrication, integration, testing, and refinement. Test results showed that Trikey and Dreamer safely performed movements under whole-body compliant control, which is a novel achievement. Dreamer will be a platform for future research and education in new human-friendly traits and behaviors. Finally, this thesis attempts to address a second broad challenge to advancing the field: the lack of standard design methodology for human-centered robots. Based on the experience of building Trikey and Dreamer, a set of consistent design guidelines and metrics for the field are suggested. They account for the complex nature of such systems, which must address safety, performance, user-friendliness, and the capability for intelligent behavior.<br>text
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Uchida, Thomas Kenji. "Real-time Dynamic Simulation of Constrained Multibody Systems using Symbolic Computation." Thesis, 2011. http://hdl.handle.net/10012/5844.
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The main objective of this research is the development of a framework for the automatic generation of systems of kinematic and dynamic equations that are suitable for real-time applications. In particular, the efficient simulation of constrained multibody systems is addressed. When modelled with ideal joints, many mechanical systems of practical interest contain closed kinematic chains, or kinematic loops, and are most conveniently modelled using a set of generalized coordinates of cardinality exceeding the degrees-of-freedom of the system. Dependent generalized coordinates add nonlinear algebraic constraint equations to the ordinary differential equations of motion, thereby producing a set of differential-algebraic equations that may be difficult to solve in an efficient yet precise manner. Several methods have been proposed for simulating such systems in real time, including index reduction, model simplification, and constraint stabilization techniques.
In this work, the equations of motion are formulated symbolically using linear graph theory. The embedding technique is applied to eliminate the Lagrange multipliers from the dynamic equations and obtain one ordinary differential equation for each independent acceleration. The theory of Gröbner bases is then used to triangularize the kinematic constraint equations, thereby producing recursively solvable systems for calculating the dependent generalized coordinates given values of the independent coordinates. For systems that can be fully triangularized, the kinematic constraints are always satisfied exactly and in a fixed amount of time. Where full triangularization is not possible, a block-triangular form can be obtained that still results in more efficient simulations than existing iterative and constraint stabilization techniques.
The proposed approach is applied to the kinematic and dynamic simulation of several mechanical systems, including six-bar mechanisms, parallel robots, and two vehicle suspensions: a five-link and a double-wishbone. The efficient kinematic solution generated for the latter is used in the real-time simulation of a vehicle with double-wishbone suspensions on both axles, which is implemented in a hardware- and operator-in-the-loop driving simulator. The Gröbner basis approach is particularly suitable for situations requiring very efficient simulations of multibody systems whose parameters are constant, such as the plant models in model-predictive control strategies and the vehicle models in driving simulators.
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Chuang, I.-Kuan, and 莊以寬. "Type Synthesis and Kinematic Analysis of Rear Suspension Mechanisms of Bikes." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/y3qh6f.
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碩士<br>崑山科技大學<br>機械工程研究所<br>92<br>Traditionally, the main components of rear suspension system of bike are tire, pad, frame, and spring for long years. Recently, alternative rear suspension system components are linkages, suspension strut, and spring. By proper designing the dimensions of the linkage and suspension strut, the rider will long the comfort of bikes. Hence, the purpose of this study is to creative design a new, comfortable, and safe mechanism of rear suspension system of bike. The concept of this study is a rotational damper pair replaces a revolute pair. First, we analyze the topological structure and motion characteristics of existed rear suspension mechanisms. Then, the design criteria of the topological structure are described. Based on the design criteria of topology, the Yan’s methodology of mechanism design is applied to synthesize new rear suspension mechanisms. And, the kinematic and force analysis of these new mechanisms is done well. Finally, a motion simulation of a (6,7) rear suspension mechanism are done well by using the package of Working Model. This research of the provide method can obtain 12 new rear suspension mechanisms with six links.
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Chen, Shang-Yang, and 陳尚揚. "Study of Kinematic Design Parameters of Front Mcpherson Strut Suspension System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/22616224017183557989.
Full textAbstract:
碩士<br>國立屏東科技大學<br>車輛工程系所<br>98<br>This study aims to investigate the optimal positions of hard points for a front MacPherson strut suspension system. Firstly, a kinematic model of McPherson strut suspension for a proposed car is established by using the ADAMS/Car software. The parallel wheel travel, rolling and steering simulations are performed separately to get the initial kinematic parameters. Secondly, the ADAMS/Insight module is employed to carry out the sensitivity analysis for kinematic design factors. Hard points to be modified include the lower arm pivot points and the joint of knuckle and absorber. Finally, the optimization of the suspension design is then competed. It is found that the resultant kinematic parameters prevail over the initial one and meet the demands in all suspension motions after optimizing. In addition, the lower reaction forces at the member joints but the strut upper fixed point are obtained. The proposed optimizing analysis method in this study, therefore, can help the designers to determine layout of the suspension system and to develop the integrated optimum design system of suspension.
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Klaps, J., and Andrew J. Day. "Wheel movement during braking." 2002. http://hdl.handle.net/10454/886.
Full textAbstract:
Yes<br>An experimental study of wheel movement arising from compliance in the front suspension and
steering system of a passenger car during braking is presented. Using a Kinematic and
Compliance (K&C) test rig, movement of the front wheels and the suspension sub-frame,
together with corresponding changes in suspension / steering geometry under simulated braking
conditions, were measured and compared with dynamic measurements of the centre points of the
front wheels. The resulting knowledge of front wheel deflections has enabled the causes and
effects of steering drift during braking to be better understood in the design of front suspension
systems for vehicle stability.